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Finding the Fourth Proportional to 520,055.60, 780,083.40 and 165,097.40

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Solution

The fourth proportional to 520,055.60, 780,083.40 and 165,097.40 is: 247,646.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,055.60 : 780,083.40 = 165,097.40 : x
  2. Step 2: Convert to fraction form
    520,055.60/780,083.40 = 165,097.40/x
  3. Step 3: Cross multiply
    520,055.60x = 780,083.40 × 165,097.40
  4. Step 4: Simplify right side
    520,055.60x = 128,789,741,123.16
  5. Step 5: Solve for x
    x = 128,789,741,123.16/520,055.60
  6. Step 6: Final answer
    x = 247,646.10

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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.