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Finding the Fourth Proportional to 487,574.94, 672,855.15 and 272,701.28

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Solution

The fourth proportional to 487,574.94, 672,855.15 and 272,701.28 is: 376,328.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,574.94 : 672,855.15 = 272,701.28 : x
  2. Step 2: Convert to fraction form
    487,574.94/672,855.15 = 272,701.28/x
  3. Step 3: Cross multiply
    487,574.94x = 672,855.15 × 272,701.28
  4. Step 4: Simplify right side
    487,574.94x = 183,488,463,364.36
  5. Step 5: Solve for x
    x = 183,488,463,364.36/487,574.94
  6. Step 6: Final answer
    x = 376,328.74

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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.