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Finding the Fourth Proportional to 507,633.39, 761,451.84 and 128,554.02

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Solution

The fourth proportional to 507,633.39, 761,451.84 and 128,554.02 is: 192,831.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    507,633.39 : 761,451.84 = 128,554.02 : x
  2. Step 2: Convert to fraction form
    507,633.39/761,451.84 = 128,554.02/x
  3. Step 3: Cross multiply
    507,633.39x = 761,451.84 × 128,554.02
  4. Step 4: Simplify right side
    507,633.39x = 97,887,695,068.40
  5. Step 5: Solve for x
    x = 97,887,695,068.40/507,633.39
  6. Step 6: Final answer
    x = 192,831.47

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.