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Finding the Fourth Proportional to 640,159.63, 960,382.32 and 240,803.71

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Solution

The fourth proportional to 640,159.63, 960,382.32 and 240,803.71 is: 361,259.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,159.63 : 960,382.32 = 240,803.71 : x
  2. Step 2: Convert to fraction form
    640,159.63/960,382.32 = 240,803.71/x
  3. Step 3: Cross multiply
    640,159.63x = 960,382.32 × 240,803.71
  4. Step 4: Simplify right side
    640,159.63x = 231,263,625,674.41
  5. Step 5: Solve for x
    x = 231,263,625,674.41/640,159.63
  6. Step 6: Final answer
    x = 361,259.31

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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.