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Finding the Fourth Proportional to 388,686.72, 583,045.44 and 108,228.48

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Solution

The fourth proportional to 388,686.72, 583,045.44 and 108,228.48 is: 162,347.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,686.72 : 583,045.44 = 108,228.48 : x
  2. Step 2: Convert to fraction form
    388,686.72/583,045.44 = 108,228.48/x
  3. Step 3: Cross multiply
    388,686.72x = 583,045.44 × 108,228.48
  4. Step 4: Simplify right side
    388,686.72x = 63,102,121,742.13
  5. Step 5: Solve for x
    x = 63,102,121,742.13/388,686.72
  6. Step 6: Final answer
    x = 162,347.00

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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.