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Finding the Fourth Proportional to 371,421.54, 556,923.20 and 118,642.64

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Solution

The fourth proportional to 371,421.54, 556,923.20 and 118,642.64 is: 177,897.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,421.54 : 556,923.20 = 118,642.64 : x
  2. Step 2: Convert to fraction form
    371,421.54/556,923.20 = 118,642.64/x
  3. Step 3: Cross multiply
    371,421.54x = 556,923.20 × 118,642.64
  4. Step 4: Simplify right side
    371,421.54x = 66,074,835,347.42
  5. Step 5: Solve for x
    x = 66,074,835,347.42/371,421.54
  6. Step 6: Final answer
    x = 177,897.16

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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.