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Finding the Fourth Proportional to 257,001.64, 385,500.16 and 200,888.92

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Solution

The fourth proportional to 257,001.64, 385,500.16 and 200,888.92 is: 301,331.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,001.64 : 385,500.16 = 200,888.92 : x
  2. Step 2: Convert to fraction form
    257,001.64/385,500.16 = 200,888.92/x
  3. Step 3: Cross multiply
    257,001.64x = 385,500.16 × 200,888.92
  4. Step 4: Simplify right side
    257,001.64x = 77,442,710,802.23
  5. Step 5: Solve for x
    x = 77,442,710,802.23/257,001.64
  6. Step 6: Final answer
    x = 301,331.58

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1.5x scale

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.