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Finding the Fourth Proportional to 292,003.10, 438,004.65 and 70,387.10

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Solution

The fourth proportional to 292,003.10, 438,004.65 and 70,387.10 is: 105,580.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,003.10 : 438,004.65 = 70,387.10 : x
  2. Step 2: Convert to fraction form
    292,003.10/438,004.65 = 70,387.10/x
  3. Step 3: Cross multiply
    292,003.10x = 438,004.65 × 70,387.10
  4. Step 4: Simplify right side
    292,003.10x = 30,829,877,100.02
  5. Step 5: Solve for x
    x = 30,829,877,100.02/292,003.10
  6. Step 6: Final answer
    x = 105,580.65

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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.