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Finding the Fourth Proportional to 156,978.90, 235,468.35 and 155,502.68

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Solution

The fourth proportional to 156,978.90, 235,468.35 and 155,502.68 is: 233,254.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,978.90 : 235,468.35 = 155,502.68 : x
  2. Step 2: Convert to fraction form
    156,978.90/235,468.35 = 155,502.68/x
  3. Step 3: Cross multiply
    156,978.90x = 235,468.35 × 155,502.68
  4. Step 4: Simplify right side
    156,978.90x = 36,615,958,302.84
  5. Step 5: Solve for x
    x = 36,615,958,302.84/156,978.90
  6. Step 6: Final answer
    x = 233,254.01

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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.