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Finding the Fourth Proportional to 285,679.68, 428,548.70 and 98,666.88

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Solution

The fourth proportional to 285,679.68, 428,548.70 and 98,666.88 is: 148,010.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,679.68 : 428,548.70 = 98,666.88 : x
  2. Step 2: Convert to fraction form
    285,679.68/428,548.70 = 98,666.88/x
  3. Step 3: Cross multiply
    285,679.68x = 428,548.70 × 98,666.88
  4. Step 4: Simplify right side
    285,679.68x = 42,283,563,157.06
  5. Step 5: Solve for x
    x = 42,283,563,157.06/285,679.68
  6. Step 6: Final answer
    x = 148,010.40

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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.