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Finding the Fourth Proportional to 407,075.39, 561,396.32 and 254,127.71

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Solution

The fourth proportional to 407,075.39, 561,396.32 and 254,127.71 is: 350,466.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,075.39 : 561,396.32 = 254,127.71 : x
  2. Step 2: Convert to fraction form
    407,075.39/561,396.32 = 254,127.71/x
  3. Step 3: Cross multiply
    407,075.39x = 561,396.32 × 254,127.71
  4. Step 4: Simplify right side
    407,075.39x = 142,666,357,126.41
  5. Step 5: Solve for x
    x = 142,666,357,126.41/407,075.39
  6. Step 6: Final answer
    x = 350,466.68

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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.