Home / 390,931.80-586,592.10-154,282.20

Finding the Fourth Proportional to 390,931.80, 586,592.10 and 154,282.20

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Solution

The fourth proportional to 390,931.80, 586,592.10 and 154,282.20 is: 231,500.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,931.80 : 586,592.10 = 154,282.20 : x
  2. Step 2: Convert to fraction form
    390,931.80/586,592.10 = 154,282.20/x
  3. Step 3: Cross multiply
    390,931.80x = 586,592.10 × 154,282.20
  4. Step 4: Simplify right side
    390,931.80x = 90,500,719,690.62
  5. Step 5: Solve for x
    x = 90,500,719,690.62/390,931.80
  6. Step 6: Final answer
    x = 231,500.02

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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.