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Finding the Fourth Proportional to 330,681.40, 456,319.90 and 185,479.20

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Solution

The fourth proportional to 330,681.40, 456,319.90 and 185,479.20 is: 255,949.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,681.40 : 456,319.90 = 185,479.20 : x
  2. Step 2: Convert to fraction form
    330,681.40/456,319.90 = 185,479.20/x
  3. Step 3: Cross multiply
    330,681.40x = 456,319.90 × 185,479.20
  4. Step 4: Simplify right side
    330,681.40x = 84,637,849,996.08
  5. Step 5: Solve for x
    x = 84,637,849,996.08/330,681.40
  6. Step 6: Final answer
    x = 255,949.84

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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.