Home / 280,901.25-387,643.86-153,577.89

Finding the Fourth Proportional to 280,901.25, 387,643.86 and 153,577.89

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Solution

The fourth proportional to 280,901.25, 387,643.86 and 153,577.89 is: 211,937.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,901.25 : 387,643.86 = 153,577.89 : x
  2. Step 2: Convert to fraction form
    280,901.25/387,643.86 = 153,577.89/x
  3. Step 3: Cross multiply
    280,901.25x = 387,643.86 × 153,577.89
  4. Step 4: Simplify right side
    280,901.25x = 59,533,526,090.26
  5. Step 5: Solve for x
    x = 59,533,526,090.26/280,901.25
  6. Step 6: Final answer
    x = 211,937.56

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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.