Home / 487,216.89-672,360.08-272,356.70

Finding the Fourth Proportional to 487,216.89, 672,360.08 and 272,356.70

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Solution

The fourth proportional to 487,216.89, 672,360.08 and 272,356.70 is: 375,852.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,216.89 : 672,360.08 = 272,356.70 : x
  2. Step 2: Convert to fraction form
    487,216.89/672,360.08 = 272,356.70/x
  3. Step 3: Cross multiply
    487,216.89x = 672,360.08 × 272,356.70
  4. Step 4: Simplify right side
    487,216.89x = 183,121,767,876.95
  5. Step 5: Solve for x
    x = 183,121,767,876.95/487,216.89
  6. Step 6: Final answer
    x = 375,852.67

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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.