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Finding the Fourth Proportional to 228,345.67, 315,117.63 and 126,378.16

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Solution

The fourth proportional to 228,345.67, 315,117.63 and 126,378.16 is: 174,402.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,345.67 : 315,117.63 = 126,378.16 : x
  2. Step 2: Convert to fraction form
    228,345.67/315,117.63 = 126,378.16/x
  3. Step 3: Cross multiply
    228,345.67x = 315,117.63 × 126,378.16
  4. Step 4: Simplify right side
    228,345.67x = 39,823,985,631.07
  5. Step 5: Solve for x
    x = 39,823,985,631.07/228,345.67
  6. Step 6: Final answer
    x = 174,402.19

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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.