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Finding the Fourth Proportional to 435,390.40, 653,085.60 and 154,916.80

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Solution

The fourth proportional to 435,390.40, 653,085.60 and 154,916.80 is: 232,375.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    435,390.40 : 653,085.60 = 154,916.80 : x
  2. Step 2: Convert to fraction form
    435,390.40/653,085.60 = 154,916.80/x
  3. Step 3: Cross multiply
    435,390.40x = 653,085.60 × 154,916.80
  4. Step 4: Simplify right side
    435,390.40x = 101,173,931,278.08
  5. Step 5: Solve for x
    x = 101,173,931,278.08/435,390.40
  6. Step 6: Final answer
    x = 232,375.20

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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.