Home / 280,365.39-387,043.02-172,994.58

Finding the Fourth Proportional to 280,365.39, 387,043.02 and 172,994.58

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Solution

The fourth proportional to 280,365.39, 387,043.02 and 172,994.58 is: 238,818.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,365.39 : 387,043.02 = 172,994.58 : x
  2. Step 2: Convert to fraction form
    280,365.39/387,043.02 = 172,994.58/x
  3. Step 3: Cross multiply
    280,365.39x = 387,043.02 × 172,994.58
  4. Step 4: Simplify right side
    280,365.39x = 66,956,344,686.83
  5. Step 5: Solve for x
    x = 66,956,344,686.83/280,365.39
  6. Step 6: Final answer
    x = 238,818.15

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1.5x scale

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.