Home / 288,602.18-398,383.37-258,335.15

Finding the Fourth Proportional to 288,602.18, 398,383.37 and 258,335.15

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Solution

The fourth proportional to 288,602.18, 398,383.37 and 258,335.15 is: 356,603.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,602.18 : 398,383.37 = 258,335.15 : x
  2. Step 2: Convert to fraction form
    288,602.18/398,383.37 = 258,335.15/x
  3. Step 3: Cross multiply
    288,602.18x = 398,383.37 × 258,335.15
  4. Step 4: Simplify right side
    288,602.18x = 102,916,424,362.86
  5. Step 5: Solve for x
    x = 102,916,424,362.86/288,602.18
  6. Step 6: Final answer
    x = 356,603.08

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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.