Home / 438,028.80-657,302.40-288,700.80

Finding the Fourth Proportional to 438,028.80, 657,302.40 and 288,700.80

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Solution

The fourth proportional to 438,028.80, 657,302.40 and 288,700.80 is: 433,222.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,028.80 : 657,302.40 = 288,700.80 : x
  2. Step 2: Convert to fraction form
    438,028.80/657,302.40 = 288,700.80/x
  3. Step 3: Cross multiply
    438,028.80x = 657,302.40 × 288,700.80
  4. Step 4: Simplify right side
    438,028.80x = 189,763,728,721.92
  5. Step 5: Solve for x
    x = 189,763,728,721.92/438,028.80
  6. Step 6: Final answer
    x = 433,222.04

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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.