Home / 385,985.74-579,143.85-161,398.66

Finding the Fourth Proportional to 385,985.74, 579,143.85 and 161,398.66

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Solution

The fourth proportional to 385,985.74, 579,143.85 and 161,398.66 is: 242,167.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,985.74 : 579,143.85 = 161,398.66 : x
  2. Step 2: Convert to fraction form
    385,985.74/579,143.85 = 161,398.66/x
  3. Step 3: Cross multiply
    385,985.74x = 579,143.85 × 161,398.66
  4. Step 4: Simplify right side
    385,985.74x = 93,473,041,337.24
  5. Step 5: Solve for x
    x = 93,473,041,337.24/385,985.74
  6. Step 6: Final answer
    x = 242,167.08

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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.