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Finding the Fourth Proportional to 554,971.40, 832,120 and 217,607.86

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Solution

The fourth proportional to 554,971.40, 832,120 and 217,607.86 is: 326,279.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,971.40 : 832,120 = 217,607.86 : x
  2. Step 2: Convert to fraction form
    554,971.40/832,120 = 217,607.86/x
  3. Step 3: Cross multiply
    554,971.40x = 832,120 × 217,607.86
  4. Step 4: Simplify right side
    554,971.40x = 181,075,852,463.20
  5. Step 5: Solve for x
    x = 181,075,852,463.20/554,971.40
  6. Step 6: Final answer
    x = 326,279.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.