Home / 781,731.02-1,172,606.24-213,140.18

Finding the Fourth Proportional to 781,731.02, 1,172,606.24 and 213,140.18

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Solution

The fourth proportional to 781,731.02, 1,172,606.24 and 213,140.18 is: 319,712.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,731.02 : 1,172,606.24 = 213,140.18 : x
  2. Step 2: Convert to fraction form
    781,731.02/1,172,606.24 = 213,140.18/x
  3. Step 3: Cross multiply
    781,731.02x = 1,172,606.24 × 213,140.18
  4. Step 4: Simplify right side
    781,731.02x = 249,929,498,133.99
  5. Step 5: Solve for x
    x = 249,929,498,133.99/781,731.02
  6. Step 6: Final answer
    x = 319,712.91

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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.