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Finding the Fourth Proportional to 485,671,518.99, 728,344,143.33 and 158,069,985.89

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Solution

The fourth proportional to 485,671,518.99, 728,344,143.33 and 158,069,985.89 is: 237,051,883.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,671,518.99 : 728,344,143.33 = 158,069,985.89 : x
  2. Step 2: Convert to fraction form
    485,671,518.99/728,344,143.33 = 158,069,985.89/x
  3. Step 3: Cross multiply
    485,671,518.99x = 728,344,143.33 × 158,069,985.89
  4. Step 4: Simplify right side
    485,671,518.99x = 115,129,348,455,595,520
  5. Step 5: Solve for x
    x = 115,129,348,455,595,520/485,671,518.99
  6. Step 6: Final answer
    x = 237,051,883.74

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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.