Home / 487,021.84-672,088.18-272,161.84

Finding the Fourth Proportional to 487,021.84, 672,088.18 and 272,161.84

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Solution

The fourth proportional to 487,021.84, 672,088.18 and 272,161.84 is: 375,582.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,021.84 : 672,088.18 = 272,161.84 : x
  2. Step 2: Convert to fraction form
    487,021.84/672,088.18 = 272,161.84/x
  3. Step 3: Cross multiply
    487,021.84x = 672,088.18 × 272,161.84
  4. Step 4: Simplify right side
    487,021.84x = 182,916,755,711.05
  5. Step 5: Solve for x
    x = 182,916,755,711.05/487,021.84
  6. Step 6: Final answer
    x = 375,582.24

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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.