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Finding the Fourth Proportional to 239,421.60, 359,132.40 and 155,440.80

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Solution

The fourth proportional to 239,421.60, 359,132.40 and 155,440.80 is: 233,161.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,421.60 : 359,132.40 = 155,440.80 : x
  2. Step 2: Convert to fraction form
    239,421.60/359,132.40 = 155,440.80/x
  3. Step 3: Cross multiply
    239,421.60x = 359,132.40 × 155,440.80
  4. Step 4: Simplify right side
    239,421.60x = 55,823,827,561.92
  5. Step 5: Solve for x
    x = 55,823,827,561.92/239,421.60
  6. Step 6: Final answer
    x = 233,161.20

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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.