Home / 256,406,308.20-353,841,018.02-138,931,545.80

Finding the Fourth Proportional to 256,406,308.20, 353,841,018.02 and 138,931,545.80

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Solution

The fourth proportional to 256,406,308.20, 353,841,018.02 and 138,931,545.80 is: 191,725,702.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,406,308.20 : 353,841,018.02 = 138,931,545.80 : x
  2. Step 2: Convert to fraction form
    256,406,308.20/353,841,018.02 = 138,931,545.80/x
  3. Step 3: Cross multiply
    256,406,308.20x = 353,841,018.02 × 138,931,545.80
  4. Step 4: Simplify right side
    256,406,308.20x = 49,159,679,598,500,384
  5. Step 5: Solve for x
    x = 49,159,679,598,500,384/256,406,308.20
  6. Step 6: Final answer
    x = 191,725,702.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.