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Finding the Fourth Proportional to 315,455.40, 435,353.30 and 179,495.08

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Solution

The fourth proportional to 315,455.40, 435,353.30 and 179,495.08 is: 247,717.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,455.40 : 435,353.30 = 179,495.08 : x
  2. Step 2: Convert to fraction form
    315,455.40/435,353.30 = 179,495.08/x
  3. Step 3: Cross multiply
    315,455.40x = 435,353.30 × 179,495.08
  4. Step 4: Simplify right side
    315,455.40x = 78,143,772,337.52
  5. Step 5: Solve for x
    x = 78,143,772,337.52/315,455.40
  6. Step 6: Final answer
    x = 247,717.34

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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.