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Finding the Fourth Proportional to 371,386.40, 512,510.48 and 201,616.16

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Solution

The fourth proportional to 371,386.40, 512,510.48 and 201,616.16 is: 278,228.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,386.40 : 512,510.48 = 201,616.16 : x
  2. Step 2: Convert to fraction form
    371,386.40/512,510.48 = 201,616.16/x
  3. Step 3: Cross multiply
    371,386.40x = 512,510.48 × 201,616.16
  4. Step 4: Simplify right side
    371,386.40x = 103,330,394,937.36
  5. Step 5: Solve for x
    x = 103,330,394,937.36/371,386.40
  6. Step 6: Final answer
    x = 278,228.81

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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.