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Finding the Fourth Proportional to 248,071.20, 372,106.80 and 148,538.40

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Solution

The fourth proportional to 248,071.20, 372,106.80 and 148,538.40 is: 222,807.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,071.20 : 372,106.80 = 148,538.40 : x
  2. Step 2: Convert to fraction form
    248,071.20/372,106.80 = 148,538.40/x
  3. Step 3: Cross multiply
    248,071.20x = 372,106.80 × 148,538.40
  4. Step 4: Simplify right side
    248,071.20x = 55,272,148,701.12
  5. Step 5: Solve for x
    x = 55,272,148,701.12/248,071.20
  6. Step 6: Final answer
    x = 222,807.60

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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.