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Finding the Fourth Proportional to 456,473.70, 684,710.55 and 207,155.70

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Solution

The fourth proportional to 456,473.70, 684,710.55 and 207,155.70 is: 310,733.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,473.70 : 684,710.55 = 207,155.70 : x
  2. Step 2: Convert to fraction form
    456,473.70/684,710.55 = 207,155.70/x
  3. Step 3: Cross multiply
    456,473.70x = 684,710.55 × 207,155.70
  4. Step 4: Simplify right side
    456,473.70x = 141,841,693,282.64
  5. Step 5: Solve for x
    x = 141,841,693,282.64/456,473.70
  6. Step 6: Final answer
    x = 310,733.55

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.