Home / 258,103.02-387,154.55-100,368.39

Finding the Fourth Proportional to 258,103.02, 387,154.55 and 100,368.39

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Solution

The fourth proportional to 258,103.02, 387,154.55 and 100,368.39 is: 150,552.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,103.02 : 387,154.55 = 100,368.39 : x
  2. Step 2: Convert to fraction form
    258,103.02/387,154.55 = 100,368.39/x
  3. Step 3: Cross multiply
    258,103.02x = 387,154.55 × 100,368.39
  4. Step 4: Simplify right side
    258,103.02x = 38,858,078,362.83
  5. Step 5: Solve for x
    x = 38,858,078,362.83/258,103.02
  6. Step 6: Final answer
    x = 150,552.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.