Home / 487,075.80-672,165.58-272,215.86

Finding the Fourth Proportional to 487,075.80, 672,165.58 and 272,215.86

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Solution

The fourth proportional to 487,075.80, 672,165.58 and 272,215.86 is: 375,658.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,075.80 : 672,165.58 = 272,215.86 : x
  2. Step 2: Convert to fraction form
    487,075.80/672,165.58 = 272,215.86/x
  3. Step 3: Cross multiply
    487,075.80x = 672,165.58 × 272,215.86
  4. Step 4: Simplify right side
    487,075.80x = 182,974,126,700.19
  5. Step 5: Solve for x
    x = 182,974,126,700.19/487,075.80
  6. Step 6: Final answer
    x = 375,658.42

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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.