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Finding the Fourth Proportional to 315,782.58, 473,673.22 and 126,287.24

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Solution

The fourth proportional to 315,782.58, 473,673.22 and 126,287.24 is: 189,430.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,782.58 : 473,673.22 = 126,287.24 : x
  2. Step 2: Convert to fraction form
    315,782.58/473,673.22 = 126,287.24/x
  3. Step 3: Cross multiply
    315,782.58x = 473,673.22 × 126,287.24
  4. Step 4: Simplify right side
    315,782.58x = 59,818,880,931.63
  5. Step 5: Solve for x
    x = 59,818,880,931.63/315,782.58
  6. Step 6: Final answer
    x = 189,430.59

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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.