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Finding the Fourth Proportional to 268,013.60, 402,020.40 and 253,498.40

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Solution

The fourth proportional to 268,013.60, 402,020.40 and 253,498.40 is: 380,247.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,013.60 : 402,020.40 = 253,498.40 : x
  2. Step 2: Convert to fraction form
    268,013.60/402,020.40 = 253,498.40/x
  3. Step 3: Cross multiply
    268,013.60x = 402,020.40 × 253,498.40
  4. Step 4: Simplify right side
    268,013.60x = 101,911,528,167.36
  5. Step 5: Solve for x
    x = 101,911,528,167.36/268,013.60
  6. Step 6: Final answer
    x = 380,247.60

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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.