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Finding the Fourth Proportional to 145,570.60, 218,064.30 and 98,331.40

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Solution

The fourth proportional to 145,570.60, 218,064.30 and 98,331.40 is: 147,300.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,570.60 : 218,064.30 = 98,331.40 : x
  2. Step 2: Convert to fraction form
    145,570.60/218,064.30 = 98,331.40/x
  3. Step 3: Cross multiply
    145,570.60x = 218,064.30 × 98,331.40
  4. Step 4: Simplify right side
    145,570.60x = 21,442,567,909.02
  5. Step 5: Solve for x
    x = 21,442,567,909.02/145,570.60
  6. Step 6: Final answer
    x = 147,300.13

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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.