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Finding the Fourth Proportional to 453,063.40, 679,422.30 and 137,415.40

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Solution

The fourth proportional to 453,063.40, 679,422.30 and 137,415.40 is: 206,070.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,063.40 : 679,422.30 = 137,415.40 : x
  2. Step 2: Convert to fraction form
    453,063.40/679,422.30 = 137,415.40/x
  3. Step 3: Cross multiply
    453,063.40x = 679,422.30 × 137,415.40
  4. Step 4: Simplify right side
    453,063.40x = 93,363,087,123.42
  5. Step 5: Solve for x
    x = 93,363,087,123.42/453,063.40
  6. Step 6: Final answer
    x = 206,070.69

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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.