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Finding the Fourth Proportional to 402,009.84, 554,780.88 and 220,738.86

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Solution

The fourth proportional to 402,009.84, 554,780.88 and 220,738.86 is: 304,623.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,009.84 : 554,780.88 = 220,738.86 : x
  2. Step 2: Convert to fraction form
    402,009.84/554,780.88 = 220,738.86/x
  3. Step 3: Cross multiply
    402,009.84x = 554,780.88 × 220,738.86
  4. Step 4: Simplify right side
    402,009.84x = 122,461,699,001.00
  5. Step 5: Solve for x
    x = 122,461,699,001.00/402,009.84
  6. Step 6: Final answer
    x = 304,623.64

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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.