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Finding the Fourth Proportional to 266,423,592.32, 399,630,855.91 and 79,677,962.32

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Solution

The fourth proportional to 266,423,592.32, 399,630,855.91 and 79,677,962.32 is: 119,515,587.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,423,592.32 : 399,630,855.91 = 79,677,962.32 : x
  2. Step 2: Convert to fraction form
    266,423,592.32/399,630,855.91 = 79,677,962.32/x
  3. Step 3: Cross multiply
    266,423,592.32x = 399,630,855.91 × 79,677,962.32
  4. Step 4: Simplify right side
    266,423,592.32x = 31,841,772,279,106,328
  5. Step 5: Solve for x
    x = 31,841,772,279,106,328/266,423,592.32
  6. Step 6: Final answer
    x = 119,515,587.95

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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.