Home / 385,547.19-531,104.45-328,002.21

Finding the Fourth Proportional to 385,547.19, 531,104.45 and 328,002.21

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Solution

The fourth proportional to 385,547.19, 531,104.45 and 328,002.21 is: 451,834.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,547.19 : 531,104.45 = 328,002.21 : x
  2. Step 2: Convert to fraction form
    385,547.19/531,104.45 = 328,002.21/x
  3. Step 3: Cross multiply
    385,547.19x = 531,104.45 × 328,002.21
  4. Step 4: Simplify right side
    385,547.19x = 174,203,433,340.84
  5. Step 5: Solve for x
    x = 174,203,433,340.84/385,547.19
  6. Step 6: Final answer
    x = 451,834.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.