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Finding the Fourth Proportional to 346,708.76, 478,447.26 and 203,465.72

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Solution

The fourth proportional to 346,708.76, 478,447.26 and 203,465.72 is: 280,776.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,708.76 : 478,447.26 = 203,465.72 : x
  2. Step 2: Convert to fraction form
    346,708.76/478,447.26 = 203,465.72/x
  3. Step 3: Cross multiply
    346,708.76x = 478,447.26 × 203,465.72
  4. Step 4: Simplify right side
    346,708.76x = 97,347,616,671.05
  5. Step 5: Solve for x
    x = 97,347,616,671.05/346,708.76
  6. Step 6: Final answer
    x = 280,776.34

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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.