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Finding the Fourth Proportional to 292,235.20, 438,525.60 and 213,150.40

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Solution

The fourth proportional to 292,235.20, 438,525.60 and 213,150.40 is: 319,851.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,235.20 : 438,525.60 = 213,150.40 : x
  2. Step 2: Convert to fraction form
    292,235.20/438,525.60 = 213,150.40/x
  3. Step 3: Cross multiply
    292,235.20x = 438,525.60 × 213,150.40
  4. Step 4: Simplify right side
    292,235.20x = 93,471,907,050.24
  5. Step 5: Solve for x
    x = 93,471,907,050.24/292,235.20
  6. Step 6: Final answer
    x = 319,851.64

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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.