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Finding the Fourth Proportional to 247,038.51, 340,904.28 and 139,606.20

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Solution

The fourth proportional to 247,038.51, 340,904.28 and 139,606.20 is: 192,651.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,038.51 : 340,904.28 = 139,606.20 : x
  2. Step 2: Convert to fraction form
    247,038.51/340,904.28 = 139,606.20/x
  3. Step 3: Cross multiply
    247,038.51x = 340,904.28 × 139,606.20
  4. Step 4: Simplify right side
    247,038.51x = 47,592,351,094.54
  5. Step 5: Solve for x
    x = 47,592,351,094.54/247,038.51
  6. Step 6: Final answer
    x = 192,651.55

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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.