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Finding the Fourth Proportional to 540,142.36, 745,386.06 and 298,435.48

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Solution

The fourth proportional to 540,142.36, 745,386.06 and 298,435.48 is: 411,835.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,142.36 : 745,386.06 = 298,435.48 : x
  2. Step 2: Convert to fraction form
    540,142.36/745,386.06 = 298,435.48/x
  3. Step 3: Cross multiply
    540,142.36x = 745,386.06 × 298,435.48
  4. Step 4: Simplify right side
    540,142.36x = 222,449,646,601.41
  5. Step 5: Solve for x
    x = 222,449,646,601.41/540,142.36
  6. Step 6: Final answer
    x = 411,835.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.