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Finding the Fourth Proportional to 485,280.90, 727,921.35 and 152,813.70

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Solution

The fourth proportional to 485,280.90, 727,921.35 and 152,813.70 is: 229,220.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,280.90 : 727,921.35 = 152,813.70 : x
  2. Step 2: Convert to fraction form
    485,280.90/727,921.35 = 152,813.70/x
  3. Step 3: Cross multiply
    485,280.90x = 727,921.35 × 152,813.70
  4. Step 4: Simplify right side
    485,280.90x = 111,236,354,802.50
  5. Step 5: Solve for x
    x = 111,236,354,802.50/485,280.90
  6. Step 6: Final answer
    x = 229,220.55

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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.