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Finding the Fourth Proportional to 492,079.40, 738,148.26 and 155,130.74

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Solution

The fourth proportional to 492,079.40, 738,148.26 and 155,130.74 is: 232,705.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,079.40 : 738,148.26 = 155,130.74 : x
  2. Step 2: Convert to fraction form
    492,079.40/738,148.26 = 155,130.74/x
  3. Step 3: Cross multiply
    492,079.40x = 738,148.26 × 155,130.74
  4. Step 4: Simplify right side
    492,079.40x = 114,509,485,803.51
  5. Step 5: Solve for x
    x = 114,509,485,803.51/492,079.40
  6. Step 6: Final answer
    x = 232,705.30

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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.