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Finding the Fourth Proportional to 292,039.28, 438,059.28 and 70,423.28

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Solution

The fourth proportional to 292,039.28, 438,059.28 and 70,423.28 is: 105,635.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,039.28 : 438,059.28 = 70,423.28 : x
  2. Step 2: Convert to fraction form
    292,039.28/438,059.28 = 70,423.28/x
  3. Step 3: Cross multiply
    292,039.28x = 438,059.28 × 70,423.28
  4. Step 4: Simplify right side
    292,039.28x = 30,849,571,332.04
  5. Step 5: Solve for x
    x = 30,849,571,332.04/292,039.28
  6. Step 6: Final answer
    x = 105,635.01

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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.