Home / 287,357.55-431,036.33-109,870.35

Finding the Fourth Proportional to 287,357.55, 431,036.33 and 109,870.35

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Solution

The fourth proportional to 287,357.55, 431,036.33 and 109,870.35 is: 164,805.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,357.55 : 431,036.33 = 109,870.35 : x
  2. Step 2: Convert to fraction form
    287,357.55/431,036.33 = 109,870.35/x
  3. Step 3: Cross multiply
    287,357.55x = 431,036.33 × 109,870.35
  4. Step 4: Simplify right side
    287,357.55x = 47,358,111,890.46
  5. Step 5: Solve for x
    x = 47,358,111,890.46/287,357.55
  6. Step 6: Final answer
    x = 164,805.53

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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.