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Finding the Fourth Proportional to 288,547.19, 432,820.82 and 78,185.13

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Solution

The fourth proportional to 288,547.19, 432,820.82 and 78,185.13 is: 117,277.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,547.19 : 432,820.82 = 78,185.13 : x
  2. Step 2: Convert to fraction form
    288,547.19/432,820.82 = 78,185.13/x
  3. Step 3: Cross multiply
    288,547.19x = 432,820.82 × 78,185.13
  4. Step 4: Simplify right side
    288,547.19x = 33,840,152,645.62
  5. Step 5: Solve for x
    x = 33,840,152,645.62/288,547.19
  6. Step 6: Final answer
    x = 117,277.70

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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.