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Finding the Fourth Proportional to 235,439.40, 353,159.10 and 216,085.80

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Solution

The fourth proportional to 235,439.40, 353,159.10 and 216,085.80 is: 324,128.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,439.40 : 353,159.10 = 216,085.80 : x
  2. Step 2: Convert to fraction form
    235,439.40/353,159.10 = 216,085.80/x
  3. Step 3: Cross multiply
    235,439.40x = 353,159.10 × 216,085.80
  4. Step 4: Simplify right side
    235,439.40x = 76,312,666,650.78
  5. Step 5: Solve for x
    x = 76,312,666,650.78/235,439.40
  6. Step 6: Final answer
    x = 324,128.70

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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.