Home / 266,686.20-399,510.90-148,145.40

Finding the Fourth Proportional to 266,686.20, 399,510.90 and 148,145.40

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Solution

The fourth proportional to 266,686.20, 399,510.90 and 148,145.40 is: 221,930.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,686.20 : 399,510.90 = 148,145.40 : x
  2. Step 2: Convert to fraction form
    266,686.20/399,510.90 = 148,145.40/x
  3. Step 3: Cross multiply
    266,686.20x = 399,510.90 × 148,145.40
  4. Step 4: Simplify right side
    266,686.20x = 59,185,702,084.86
  5. Step 5: Solve for x
    x = 59,185,702,084.86/266,686.20
  6. Step 6: Final answer
    x = 221,930.13

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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.