Home / 370,221.02-510,849.78-209,072.87

Finding the Fourth Proportional to 370,221.02, 510,849.78 and 209,072.87

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Solution

The fourth proportional to 370,221.02, 510,849.78 and 209,072.87 is: 288,489.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,221.02 : 510,849.78 = 209,072.87 : x
  2. Step 2: Convert to fraction form
    370,221.02/510,849.78 = 209,072.87/x
  3. Step 3: Cross multiply
    370,221.02x = 510,849.78 × 209,072.87
  4. Step 4: Simplify right side
    370,221.02x = 106,804,829,643.47
  5. Step 5: Solve for x
    x = 106,804,829,643.47/370,221.02
  6. Step 6: Final answer
    x = 288,489.37

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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.