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Finding the Fourth Proportional to 457,490.40, 631,329.12 and 250,756.80

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Solution

The fourth proportional to 457,490.40, 631,329.12 and 250,756.80 is: 346,040.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,490.40 : 631,329.12 = 250,756.80 : x
  2. Step 2: Convert to fraction form
    457,490.40/631,329.12 = 250,756.80/x
  3. Step 3: Cross multiply
    457,490.40x = 631,329.12 × 250,756.80
  4. Step 4: Simplify right side
    457,490.40x = 158,310,069,878.02
  5. Step 5: Solve for x
    x = 158,310,069,878.02/457,490.40
  6. Step 6: Final answer
    x = 346,040.20

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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.