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Finding the Fourth Proportional to 318,707,579.61, 477,866,636.91 and 152,761,862.88

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Solution

The fourth proportional to 318,707,579.61, 477,866,636.91 and 152,761,862.88 is: 229,049,455.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,707,579.61 : 477,866,636.91 = 152,761,862.88 : x
  2. Step 2: Convert to fraction form
    318,707,579.61/477,866,636.91 = 152,761,862.88/x
  3. Step 3: Cross multiply
    318,707,579.61x = 477,866,636.91 × 152,761,862.88
  4. Step 4: Simplify right side
    318,707,579.61x = 72,999,797,662,572,176
  5. Step 5: Solve for x
    x = 72,999,797,662,572,176/318,707,579.61
  6. Step 6: Final answer
    x = 229,049,455.78

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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.