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Finding the Fourth Proportional to 292,284.40, 438,426.60 and 134,820.40

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Solution

The fourth proportional to 292,284.40, 438,426.60 and 134,820.40 is: 202,230.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,284.40 : 438,426.60 = 134,820.40 : x
  2. Step 2: Convert to fraction form
    292,284.40/438,426.60 = 134,820.40/x
  3. Step 3: Cross multiply
    292,284.40x = 438,426.60 × 134,820.40
  4. Step 4: Simplify right side
    292,284.40x = 59,108,849,582.64
  5. Step 5: Solve for x
    x = 59,108,849,582.64/292,284.40
  6. Step 6: Final answer
    x = 202,230.60

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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.