Home / 390,688.20-586,032.30-141,337.80

Finding the Fourth Proportional to 390,688.20, 586,032.30 and 141,337.80

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Solution

The fourth proportional to 390,688.20, 586,032.30 and 141,337.80 is: 212,006.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,688.20 : 586,032.30 = 141,337.80 : x
  2. Step 2: Convert to fraction form
    390,688.20/586,032.30 = 141,337.80/x
  3. Step 3: Cross multiply
    390,688.20x = 586,032.30 × 141,337.80
  4. Step 4: Simplify right side
    390,688.20x = 82,828,516,010.94
  5. Step 5: Solve for x
    x = 82,828,516,010.94/390,688.20
  6. Step 6: Final answer
    x = 212,006.70

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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.