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Finding the Fourth Proportional to 284,561.60, 426,280.80 and 144,420.80

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Solution

The fourth proportional to 284,561.60, 426,280.80 and 144,420.80 is: 216,346.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,561.60 : 426,280.80 = 144,420.80 : x
  2. Step 2: Convert to fraction form
    284,561.60/426,280.80 = 144,420.80/x
  3. Step 3: Cross multiply
    284,561.60x = 426,280.80 × 144,420.80
  4. Step 4: Simplify right side
    284,561.60x = 61,563,814,160.64
  5. Step 5: Solve for x
    x = 61,563,814,160.64/284,561.60
  6. Step 6: Final answer
    x = 216,346.18

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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.