Home / 280,550.08-387,161.58-159,699.16

Finding the Fourth Proportional to 280,550.08, 387,161.58 and 159,699.16

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Solution

The fourth proportional to 280,550.08, 387,161.58 and 159,699.16 is: 220,386.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,550.08 : 387,161.58 = 159,699.16 : x
  2. Step 2: Convert to fraction form
    280,550.08/387,161.58 = 159,699.16/x
  3. Step 3: Cross multiply
    280,550.08x = 387,161.58 × 159,699.16
  4. Step 4: Simplify right side
    280,550.08x = 61,829,379,110.27
  5. Step 5: Solve for x
    x = 61,829,379,110.27/280,550.08
  6. Step 6: Final answer
    x = 220,386.25

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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.