Home / 280,881.42-387,617.73-153,557.02

Finding the Fourth Proportional to 280,881.42, 387,617.73 and 153,557.02

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Solution

The fourth proportional to 280,881.42, 387,617.73 and 153,557.02 is: 211,909.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,881.42 : 387,617.73 = 153,557.02 : x
  2. Step 2: Convert to fraction form
    280,881.42/387,617.73 = 153,557.02/x
  3. Step 3: Cross multiply
    280,881.42x = 387,617.73 × 153,557.02
  4. Step 4: Simplify right side
    280,881.42x = 59,521,421,678.18
  5. Step 5: Solve for x
    x = 59,521,421,678.18/280,881.42
  6. Step 6: Final answer
    x = 211,909.43

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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.