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Finding the Fourth Proportional to 290,302.40, 435,307.80 and 132,352.40

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Solution

The fourth proportional to 290,302.40, 435,307.80 and 132,352.40 is: 198,462.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,302.40 : 435,307.80 = 132,352.40 : x
  2. Step 2: Convert to fraction form
    290,302.40/435,307.80 = 132,352.40/x
  3. Step 3: Cross multiply
    290,302.40x = 435,307.80 × 132,352.40
  4. Step 4: Simplify right side
    290,302.40x = 57,614,032,068.72
  5. Step 5: Solve for x
    x = 57,614,032,068.72/290,302.40
  6. Step 6: Final answer
    x = 198,462.13

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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.