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Finding the Fourth Proportional to 457,420.64, 631,222.35 and 253,480.19

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Solution

The fourth proportional to 457,420.64, 631,222.35 and 253,480.19 is: 349,792.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,420.64 : 631,222.35 = 253,480.19 : x
  2. Step 2: Convert to fraction form
    457,420.64/631,222.35 = 253,480.19/x
  3. Step 3: Cross multiply
    457,420.64x = 631,222.35 × 253,480.19
  4. Step 4: Simplify right side
    457,420.64x = 160,002,361,210.25
  5. Step 5: Solve for x
    x = 160,002,361,210.25/457,420.64
  6. Step 6: Final answer
    x = 349,792.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.