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Finding the Fourth Proportional to 312,058.66, 430,640 and 168,818.67

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Solution

The fourth proportional to 312,058.66, 430,640 and 168,818.67 is: 232,969.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,058.66 : 430,640 = 168,818.67 : x
  2. Step 2: Convert to fraction form
    312,058.66/430,640 = 168,818.67/x
  3. Step 3: Cross multiply
    312,058.66x = 430,640 × 168,818.67
  4. Step 4: Simplify right side
    312,058.66x = 72,700,072,048.80
  5. Step 5: Solve for x
    x = 72,700,072,048.80/312,058.66
  6. Step 6: Final answer
    x = 232,969.25

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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.