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Finding the Fourth Proportional to 387,559.74, 581,210.28 and 162,878.31

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Solution

The fourth proportional to 387,559.74, 581,210.28 and 162,878.31 is: 244,263.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,559.74 : 581,210.28 = 162,878.31 : x
  2. Step 2: Convert to fraction form
    387,559.74/581,210.28 = 162,878.31/x
  3. Step 3: Cross multiply
    387,559.74x = 581,210.28 × 162,878.31
  4. Step 4: Simplify right side
    387,559.74x = 94,666,548,161.03
  5. Step 5: Solve for x
    x = 94,666,548,161.03/387,559.74
  6. Step 6: Final answer
    x = 244,263.11

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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.