Home / 280,914.72-387,567.36-159,970.26

Finding the Fourth Proportional to 280,914.72, 387,567.36 and 159,970.26

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Solution

The fourth proportional to 280,914.72, 387,567.36 and 159,970.26 is: 220,704.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,914.72 : 387,567.36 = 159,970.26 : x
  2. Step 2: Convert to fraction form
    280,914.72/387,567.36 = 159,970.26/x
  3. Step 3: Cross multiply
    280,914.72x = 387,567.36 × 159,970.26
  4. Step 4: Simplify right side
    280,914.72x = 61,999,251,346.71
  5. Step 5: Solve for x
    x = 61,999,251,346.71/280,914.72
  6. Step 6: Final answer
    x = 220,704.89

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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.