Home / 280,664.16-387,316.08-153,339.72

Finding the Fourth Proportional to 280,664.16, 387,316.08 and 153,339.72

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Solution

The fourth proportional to 280,664.16, 387,316.08 and 153,339.72 is: 211,608.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,664.16 : 387,316.08 = 153,339.72 : x
  2. Step 2: Convert to fraction form
    280,664.16/387,316.08 = 153,339.72/x
  3. Step 3: Cross multiply
    280,664.16x = 387,316.08 × 153,339.72
  4. Step 4: Simplify right side
    280,664.16x = 59,390,939,258.70
  5. Step 5: Solve for x
    x = 59,390,939,258.70/280,664.16
  6. Step 6: Final answer
    x = 211,608.56

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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.