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Finding the Fourth Proportional to 272,378.04, 408,567.06 and 85,404.60

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Solution

The fourth proportional to 272,378.04, 408,567.06 and 85,404.60 is: 128,106.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,378.04 : 408,567.06 = 85,404.60 : x
  2. Step 2: Convert to fraction form
    272,378.04/408,567.06 = 85,404.60/x
  3. Step 3: Cross multiply
    272,378.04x = 408,567.06 × 85,404.60
  4. Step 4: Simplify right side
    272,378.04x = 34,893,506,332.48
  5. Step 5: Solve for x
    x = 34,893,506,332.48/272,378.04
  6. Step 6: Final answer
    x = 128,106.90

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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.