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Finding the Fourth Proportional to 520,146.40, 780,253.64 and 160,273.12

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Solution

The fourth proportional to 520,146.40, 780,253.64 and 160,273.12 is: 240,420.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,146.40 : 780,253.64 = 160,273.12 : x
  2. Step 2: Convert to fraction form
    520,146.40/780,253.64 = 160,273.12/x
  3. Step 3: Cross multiply
    520,146.40x = 780,253.64 × 160,273.12
  4. Step 4: Simplify right side
    520,146.40x = 125,053,685,274.16
  5. Step 5: Solve for x
    x = 125,053,685,274.16/520,146.40
  6. Step 6: Final answer
    x = 240,420.17

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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.