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Finding the Fourth Proportional to 358,802.80, 495,110.64 and 220,959.80

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Solution

The fourth proportional to 358,802.80, 495,110.64 and 220,959.80 is: 304,901.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,802.80 : 495,110.64 = 220,959.80 : x
  2. Step 2: Convert to fraction form
    358,802.80/495,110.64 = 220,959.80/x
  3. Step 3: Cross multiply
    358,802.80x = 495,110.64 × 220,959.80
  4. Step 4: Simplify right side
    358,802.80x = 109,399,547,992.27
  5. Step 5: Solve for x
    x = 109,399,547,992.27/358,802.80
  6. Step 6: Final answer
    x = 304,901.60

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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.