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Finding the Fourth Proportional to 330,866.16, 456,350.64 and 209,903.04

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Solution

The fourth proportional to 330,866.16, 456,350.64 and 209,903.04 is: 289,510.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,866.16 : 456,350.64 = 209,903.04 : x
  2. Step 2: Convert to fraction form
    330,866.16/456,350.64 = 209,903.04/x
  3. Step 3: Cross multiply
    330,866.16x = 456,350.64 × 209,903.04
  4. Step 4: Simplify right side
    330,866.16x = 95,789,386,641.95
  5. Step 5: Solve for x
    x = 95,789,386,641.95/330,866.16
  6. Step 6: Final answer
    x = 289,510.98

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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.