Home / 278,230.32-417,297.02-128,457.81

Finding the Fourth Proportional to 278,230.32, 417,297.02 and 128,457.81

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Solution

The fourth proportional to 278,230.32, 417,297.02 and 128,457.81 is: 192,664.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,230.32 : 417,297.02 = 128,457.81 : x
  2. Step 2: Convert to fraction form
    278,230.32/417,297.02 = 128,457.81/x
  3. Step 3: Cross multiply
    278,230.32x = 417,297.02 × 128,457.81
  4. Step 4: Simplify right side
    278,230.32x = 53,605,060,666.44
  5. Step 5: Solve for x
    x = 53,605,060,666.44/278,230.32
  6. Step 6: Final answer
    x = 192,664.34

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1.5x scale

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.