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Finding the Fourth Proportional to 346,495.59, 478,171.76 and 203,358.87

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Solution

The fourth proportional to 346,495.59, 478,171.76 and 203,358.87 is: 280,639.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,495.59 : 478,171.76 = 203,358.87 : x
  2. Step 2: Convert to fraction form
    346,495.59/478,171.76 = 203,358.87/x
  3. Step 3: Cross multiply
    346,495.59x = 478,171.76 × 203,358.87
  4. Step 4: Simplify right side
    346,495.59x = 97,240,467,762.72
  5. Step 5: Solve for x
    x = 97,240,467,762.72/346,495.59
  6. Step 6: Final answer
    x = 280,639.84

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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.