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Finding the Fourth Proportional to 313,870.02, 472,513.03 and 285,969.30

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Solution

The fourth proportional to 313,870.02, 472,513.03 and 285,969.30 is: 430,510.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,870.02 : 472,513.03 = 285,969.30 : x
  2. Step 2: Convert to fraction form
    313,870.02/472,513.03 = 285,969.30/x
  3. Step 3: Cross multiply
    313,870.02x = 472,513.03 × 285,969.30
  4. Step 4: Simplify right side
    313,870.02x = 135,124,220,429.98
  5. Step 5: Solve for x
    x = 135,124,220,429.98/313,870.02
  6. Step 6: Final answer
    x = 430,510.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.