Home / 280,875.68-387,563.64-160,019.36

Finding the Fourth Proportional to 280,875.68, 387,563.64 and 160,019.36

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Solution

The fourth proportional to 280,875.68, 387,563.64 and 160,019.36 is: 220,801.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,875.68 : 387,563.64 = 160,019.36 : x
  2. Step 2: Convert to fraction form
    280,875.68/387,563.64 = 160,019.36/x
  3. Step 3: Cross multiply
    280,875.68x = 387,563.64 × 160,019.36
  4. Step 4: Simplify right side
    280,875.68x = 62,017,685,632.07
  5. Step 5: Solve for x
    x = 62,017,685,632.07/280,875.68
  6. Step 6: Final answer
    x = 220,801.19

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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.