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Finding the Fourth Proportional to 610,985.34, 915,393.69 and 255,216.42

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Solution

The fourth proportional to 610,985.34, 915,393.69 and 255,216.42 is: 382,371.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,985.34 : 915,393.69 = 255,216.42 : x
  2. Step 2: Convert to fraction form
    610,985.34/915,393.69 = 255,216.42/x
  3. Step 3: Cross multiply
    610,985.34x = 915,393.69 × 255,216.42
  4. Step 4: Simplify right side
    610,985.34x = 233,623,500,452.39
  5. Step 5: Solve for x
    x = 233,623,500,452.39/610,985.34
  6. Step 6: Final answer
    x = 382,371.70

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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.