Home / 385,308.30-577,962.45-243,590.70

Finding the Fourth Proportional to 385,308.30, 577,962.45 and 243,590.70

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Solution

The fourth proportional to 385,308.30, 577,962.45 and 243,590.70 is: 365,386.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,308.30 : 577,962.45 = 243,590.70 : x
  2. Step 2: Convert to fraction form
    385,308.30/577,962.45 = 243,590.70/x
  3. Step 3: Cross multiply
    385,308.30x = 577,962.45 × 243,590.70
  4. Step 4: Simplify right side
    385,308.30x = 140,786,277,769.22
  5. Step 5: Solve for x
    x = 140,786,277,769.22/385,308.30
  6. Step 6: Final answer
    x = 365,386.05

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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.