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Finding the Fourth Proportional to 507,643.80, 761,465.70 and 152,712.60

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Solution

The fourth proportional to 507,643.80, 761,465.70 and 152,712.60 is: 229,068.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    507,643.80 : 761,465.70 = 152,712.60 : x
  2. Step 2: Convert to fraction form
    507,643.80/761,465.70 = 152,712.60/x
  3. Step 3: Cross multiply
    507,643.80x = 761,465.70 × 152,712.60
  4. Step 4: Simplify right side
    507,643.80x = 116,285,406,857.82
  5. Step 5: Solve for x
    x = 116,285,406,857.82/507,643.80
  6. Step 6: Final answer
    x = 229,068.90

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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.