Home / 390,949.12-586,498.02-134,713.72

Finding the Fourth Proportional to 390,949.12, 586,498.02 and 134,713.72

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Solution

The fourth proportional to 390,949.12, 586,498.02 and 134,713.72 is: 202,096.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,949.12 : 586,498.02 = 134,713.72 : x
  2. Step 2: Convert to fraction form
    390,949.12/586,498.02 = 134,713.72/x
  3. Step 3: Cross multiply
    390,949.12x = 586,498.02 × 134,713.72
  4. Step 4: Simplify right side
    390,949.12x = 79,009,330,046.83
  5. Step 5: Solve for x
    x = 79,009,330,046.83/390,949.12
  6. Step 6: Final answer
    x = 202,096.20

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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.