Home / 258,870.36-388,354.50-101,088.84

Finding the Fourth Proportional to 258,870.36, 388,354.50 and 101,088.84

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Solution

The fourth proportional to 258,870.36, 388,354.50 and 101,088.84 is: 151,652.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,870.36 : 388,354.50 = 101,088.84 : x
  2. Step 2: Convert to fraction form
    258,870.36/388,354.50 = 101,088.84/x
  3. Step 3: Cross multiply
    258,870.36x = 388,354.50 × 101,088.84
  4. Step 4: Simplify right side
    258,870.36x = 39,258,305,913.78
  5. Step 5: Solve for x
    x = 39,258,305,913.78/258,870.36
  6. Step 6: Final answer
    x = 151,652.38

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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.