Home / 280,722.57-387,406.70-153,406.36

Finding the Fourth Proportional to 280,722.57, 387,406.70 and 153,406.36

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Solution

The fourth proportional to 280,722.57, 387,406.70 and 153,406.36 is: 211,706.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,722.57 : 387,406.70 = 153,406.36 : x
  2. Step 2: Convert to fraction form
    280,722.57/387,406.70 = 153,406.36/x
  3. Step 3: Cross multiply
    280,722.57x = 387,406.70 × 153,406.36
  4. Step 4: Simplify right side
    280,722.57x = 59,430,651,686.61
  5. Step 5: Solve for x
    x = 59,430,651,686.61/280,722.57
  6. Step 6: Final answer
    x = 211,706.00

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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.