Home / 288,365.04-432,275.40-138,690

Finding the Fourth Proportional to 288,365.04, 432,275.40 and 138,690

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Solution

The fourth proportional to 288,365.04, 432,275.40 and 138,690 is: 207,904.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,365.04 : 432,275.40 = 138,690 : x
  2. Step 2: Convert to fraction form
    288,365.04/432,275.40 = 138,690/x
  3. Step 3: Cross multiply
    288,365.04x = 432,275.40 × 138,690
  4. Step 4: Simplify right side
    288,365.04x = 59,952,275,226
  5. Step 5: Solve for x
    x = 59,952,275,226/288,365.04
  6. Step 6: Final answer
    x = 207,904.10

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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.