Home / 297,457.17-446,349.47-128,978.79

Finding the Fourth Proportional to 297,457.17, 446,349.47 and 128,978.79

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Solution

The fourth proportional to 297,457.17, 446,349.47 and 128,978.79 is: 193,539.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,457.17 : 446,349.47 = 128,978.79 : x
  2. Step 2: Convert to fraction form
    297,457.17/446,349.47 = 128,978.79/x
  3. Step 3: Cross multiply
    297,457.17x = 446,349.47 × 128,978.79
  4. Step 4: Simplify right side
    297,457.17x = 57,569,614,557.74
  5. Step 5: Solve for x
    x = 57,569,614,557.74/297,457.17
  6. Step 6: Final answer
    x = 193,539.17

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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.