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Finding the Fourth Proportional to 306,959.19, 423,547.47 and 170,989.77

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Solution

The fourth proportional to 306,959.19, 423,547.47 and 170,989.77 is: 235,934.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,959.19 : 423,547.47 = 170,989.77 : x
  2. Step 2: Convert to fraction form
    306,959.19/423,547.47 = 170,989.77/x
  3. Step 3: Cross multiply
    306,959.19x = 423,547.47 × 170,989.77
  4. Step 4: Simplify right side
    306,959.19x = 72,422,284,479.38
  5. Step 5: Solve for x
    x = 72,422,284,479.38/306,959.19
  6. Step 6: Final answer
    x = 235,934.57

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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.