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Finding the Fourth Proportional to 473,430.40, 709,540.80 and 192,630.40

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Solution

The fourth proportional to 473,430.40, 709,540.80 and 192,630.40 is: 288,699.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    473,430.40 : 709,540.80 = 192,630.40 : x
  2. Step 2: Convert to fraction form
    473,430.40/709,540.80 = 192,630.40/x
  3. Step 3: Cross multiply
    473,430.40x = 709,540.80 × 192,630.40
  4. Step 4: Simplify right side
    473,430.40x = 136,679,128,120.32
  5. Step 5: Solve for x
    x = 136,679,128,120.32/473,430.40
  6. Step 6: Final answer
    x = 288,699.52

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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.