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Finding the Fourth Proportional to 356,608.86, 492,170.67 and 220,686.63

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Solution

The fourth proportional to 356,608.86, 492,170.67 and 220,686.63 is: 304,578.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,608.86 : 492,170.67 = 220,686.63 : x
  2. Step 2: Convert to fraction form
    356,608.86/492,170.67 = 220,686.63/x
  3. Step 3: Cross multiply
    356,608.86x = 492,170.67 × 220,686.63
  4. Step 4: Simplify right side
    356,608.86x = 108,615,486,547.14
  5. Step 5: Solve for x
    x = 108,615,486,547.14/356,608.86
  6. Step 6: Final answer
    x = 304,578.77

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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.