Home / 257,387.40-385,901.10-152,152.20

Finding the Fourth Proportional to 257,387.40, 385,901.10 and 152,152.20

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Solution

The fourth proportional to 257,387.40, 385,901.10 and 152,152.20 is: 228,121.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,387.40 : 385,901.10 = 152,152.20 : x
  2. Step 2: Convert to fraction form
    257,387.40/385,901.10 = 152,152.20/x
  3. Step 3: Cross multiply
    257,387.40x = 385,901.10 × 152,152.20
  4. Step 4: Simplify right side
    257,387.40x = 58,715,701,347.42
  5. Step 5: Solve for x
    x = 58,715,701,347.42/257,387.40
  6. Step 6: Final answer
    x = 228,121.89

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1.5x scale

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.