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Finding the Fourth Proportional to 309,671.16, 427,345.90 and 175,535.16

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Solution

The fourth proportional to 309,671.16, 427,345.90 and 175,535.16 is: 242,238.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,671.16 : 427,345.90 = 175,535.16 : x
  2. Step 2: Convert to fraction form
    309,671.16/427,345.90 = 175,535.16/x
  3. Step 3: Cross multiply
    309,671.16x = 427,345.90 × 175,535.16
  4. Step 4: Simplify right side
    309,671.16x = 75,014,230,931.84
  5. Step 5: Solve for x
    x = 75,014,230,931.84/309,671.16
  6. Step 6: Final answer
    x = 242,238.35

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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.