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Finding the Fourth Proportional to 488,486.80, 732,730.20 and 208,032.40

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Solution

The fourth proportional to 488,486.80, 732,730.20 and 208,032.40 is: 312,048.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,486.80 : 732,730.20 = 208,032.40 : x
  2. Step 2: Convert to fraction form
    488,486.80/732,730.20 = 208,032.40/x
  3. Step 3: Cross multiply
    488,486.80x = 732,730.20 × 208,032.40
  4. Step 4: Simplify right side
    488,486.80x = 152,431,622,058.48
  5. Step 5: Solve for x
    x = 152,431,622,058.48/488,486.80
  6. Step 6: Final answer
    x = 312,048.60

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Similar ratio
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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.