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Finding the Fourth Proportional to 289,547.88, 399,587.06 and 162,219.12

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Solution

The fourth proportional to 289,547.88, 399,587.06 and 162,219.12 is: 223,868.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,547.88 : 399,587.06 = 162,219.12 : x
  2. Step 2: Convert to fraction form
    289,547.88/399,587.06 = 162,219.12/x
  3. Step 3: Cross multiply
    289,547.88x = 399,587.06 × 162,219.12
  4. Step 4: Simplify right side
    289,547.88x = 64,820,661,236.59
  5. Step 5: Solve for x
    x = 64,820,661,236.59/289,547.88
  6. Step 6: Final answer
    x = 223,868.54

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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.