Home / 280,448.75-387,019.05-153,124.34

Finding the Fourth Proportional to 280,448.75, 387,019.05 and 153,124.34

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Solution

The fourth proportional to 280,448.75, 387,019.05 and 153,124.34 is: 211,311.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,448.75 : 387,019.05 = 153,124.34 : x
  2. Step 2: Convert to fraction form
    280,448.75/387,019.05 = 153,124.34/x
  3. Step 3: Cross multiply
    280,448.75x = 387,019.05 × 153,124.34
  4. Step 4: Simplify right side
    280,448.75x = 59,262,034,663.58
  5. Step 5: Solve for x
    x = 59,262,034,663.58/280,448.75
  6. Step 6: Final answer
    x = 211,311.46

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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.