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Finding the Fourth Proportional to 402,802.75, 555,856.72 and 221,514.68

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Solution

The fourth proportional to 402,802.75, 555,856.72 and 221,514.68 is: 305,684.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,802.75 : 555,856.72 = 221,514.68 : x
  2. Step 2: Convert to fraction form
    402,802.75/555,856.72 = 221,514.68/x
  3. Step 3: Cross multiply
    402,802.75x = 555,856.72 × 221,514.68
  4. Step 4: Simplify right side
    402,802.75x = 123,130,424,292.51
  5. Step 5: Solve for x
    x = 123,130,424,292.51/402,802.75
  6. Step 6: Final answer
    x = 305,684.17

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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.