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Finding the Fourth Proportional to 292,804.80, 438,235.20 and 212,614.80

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Solution

The fourth proportional to 292,804.80, 438,235.20 and 212,614.80 is: 318,216.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,804.80 : 438,235.20 = 212,614.80 : x
  2. Step 2: Convert to fraction form
    292,804.80/438,235.20 = 212,614.80/x
  3. Step 3: Cross multiply
    292,804.80x = 438,235.20 × 212,614.80
  4. Step 4: Simplify right side
    292,804.80x = 93,175,289,400.96
  5. Step 5: Solve for x
    x = 93,175,289,400.96/292,804.80
  6. Step 6: Final answer
    x = 318,216.40

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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.