Home / 280,688.64-387,298.08-167,521.92

Finding the Fourth Proportional to 280,688.64, 387,298.08 and 167,521.92

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Solution

The fourth proportional to 280,688.64, 387,298.08 and 167,521.92 is: 231,149.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,688.64 : 387,298.08 = 167,521.92 : x
  2. Step 2: Convert to fraction form
    280,688.64/387,298.08 = 167,521.92/x
  3. Step 3: Cross multiply
    280,688.64x = 387,298.08 × 167,521.92
  4. Step 4: Simplify right side
    280,688.64x = 64,880,917,973.91
  5. Step 5: Solve for x
    x = 64,880,917,973.91/280,688.64
  6. Step 6: Final answer
    x = 231,149.07

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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.