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Finding the Fourth Proportional to 553,636.20, 830,454.84 and 154,278.12

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Solution

The fourth proportional to 553,636.20, 830,454.84 and 154,278.12 is: 231,417.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,636.20 : 830,454.84 = 154,278.12 : x
  2. Step 2: Convert to fraction form
    553,636.20/830,454.84 = 154,278.12/x
  3. Step 3: Cross multiply
    553,636.20x = 830,454.84 × 154,278.12
  4. Step 4: Simplify right side
    553,636.20x = 128,121,011,460.10
  5. Step 5: Solve for x
    x = 128,121,011,460.10/553,636.20
  6. Step 6: Final answer
    x = 231,417.33

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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.