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Finding the Fourth Proportional to 402,075.66, 554,839.56 and 220,786.86

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Solution

The fourth proportional to 402,075.66, 554,839.56 and 220,786.86 is: 304,672.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,075.66 : 554,839.56 = 220,786.86 : x
  2. Step 2: Convert to fraction form
    402,075.66/554,839.56 = 220,786.86/x
  3. Step 3: Cross multiply
    402,075.66x = 554,839.56 × 220,786.86
  4. Step 4: Simplify right side
    402,075.66x = 122,501,284,256.18
  5. Step 5: Solve for x
    x = 122,501,284,256.18/402,075.66
  6. Step 6: Final answer
    x = 304,672.22

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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.