Home / 390,848.20-586,272.30-255,545.80

Finding the Fourth Proportional to 390,848.20, 586,272.30 and 255,545.80

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Solution

The fourth proportional to 390,848.20, 586,272.30 and 255,545.80 is: 383,318.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,848.20 : 586,272.30 = 255,545.80 : x
  2. Step 2: Convert to fraction form
    390,848.20/586,272.30 = 255,545.80/x
  3. Step 3: Cross multiply
    390,848.20x = 586,272.30 × 255,545.80
  4. Step 4: Simplify right side
    390,848.20x = 149,819,423,921.34
  5. Step 5: Solve for x
    x = 149,819,423,921.34/390,848.20
  6. Step 6: Final answer
    x = 383,318.70

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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.