Home / 387,638.06-581,410.91-103,349.93

Finding the Fourth Proportional to 387,638.06, 581,410.91 and 103,349.93

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Solution

The fourth proportional to 387,638.06, 581,410.91 and 103,349.93 is: 155,012.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,638.06 : 581,410.91 = 103,349.93 : x
  2. Step 2: Convert to fraction form
    387,638.06/581,410.91 = 103,349.93/x
  3. Step 3: Cross multiply
    387,638.06x = 581,410.91 × 103,349.93
  4. Step 4: Simplify right side
    387,638.06x = 60,088,774,201.06
  5. Step 5: Solve for x
    x = 60,088,774,201.06/387,638.06
  6. Step 6: Final answer
    x = 155,012.58

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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.