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Finding the Fourth Proportional to 487,114.40, 672,196.72 and 266,347.64

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Solution

The fourth proportional to 487,114.40, 672,196.72 and 266,347.64 is: 367,548.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,114.40 : 672,196.72 = 266,347.64 : x
  2. Step 2: Convert to fraction form
    487,114.40/672,196.72 = 266,347.64/x
  3. Step 3: Cross multiply
    487,114.40x = 672,196.72 × 266,347.64
  4. Step 4: Simplify right side
    487,114.40x = 179,038,009,987.74
  5. Step 5: Solve for x
    x = 179,038,009,987.74/487,114.40
  6. Step 6: Final answer
    x = 367,548.18

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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.