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Finding the Fourth Proportional to 143,328.80, 214,928.40 and 64,402.40

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Solution

The fourth proportional to 143,328.80, 214,928.40 and 64,402.40 is: 96,574.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,328.80 : 214,928.40 = 64,402.40 : x
  2. Step 2: Convert to fraction form
    143,328.80/214,928.40 = 64,402.40/x
  3. Step 3: Cross multiply
    143,328.80x = 214,928.40 × 64,402.40
  4. Step 4: Simplify right side
    143,328.80x = 13,841,904,788.16
  5. Step 5: Solve for x
    x = 13,841,904,788.16/143,328.80
  6. Step 6: Final answer
    x = 96,574.48

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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.