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Finding the Fourth Proportional to 266,423,596.77, 399,630,862.60 and 79,677,966.77

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Solution

The fourth proportional to 266,423,596.77, 399,630,862.60 and 79,677,966.77 is: 119,515,594.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,423,596.77 : 399,630,862.60 = 79,677,966.77 : x
  2. Step 2: Convert to fraction form
    266,423,596.77/399,630,862.60 = 79,677,966.77/x
  3. Step 3: Cross multiply
    266,423,596.77x = 399,630,862.60 × 79,677,966.77
  4. Step 4: Simplify right side
    266,423,596.77x = 31,841,774,590,509,236
  5. Step 5: Solve for x
    x = 31,841,774,590,509,236/266,423,596.77
  6. Step 6: Final answer
    x = 119,515,594.63

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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.