Home / 280,693.05-387,359.13-153,368.63

Finding the Fourth Proportional to 280,693.05, 387,359.13 and 153,368.63

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Solution

The fourth proportional to 280,693.05, 387,359.13 and 153,368.63 is: 211,650.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,693.05 : 387,359.13 = 153,368.63 : x
  2. Step 2: Convert to fraction form
    280,693.05/387,359.13 = 153,368.63/x
  3. Step 3: Cross multiply
    280,693.05x = 387,359.13 × 153,368.63
  4. Step 4: Simplify right side
    280,693.05x = 59,408,737,149.30
  5. Step 5: Solve for x
    x = 59,408,737,149.30/280,693.05
  6. Step 6: Final answer
    x = 211,650.19

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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.