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Finding the Fourth Proportional to 346,459, 478,113.45 and 195,565.72

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Solution

The fourth proportional to 346,459, 478,113.45 and 195,565.72 is: 269,880.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,459 : 478,113.45 = 195,565.72 : x
  2. Step 2: Convert to fraction form
    346,459/478,113.45 = 195,565.72/x
  3. Step 3: Cross multiply
    346,459x = 478,113.45 × 195,565.72
  4. Step 4: Simplify right side
    346,459x = 93,502,601,090.93
  5. Step 5: Solve for x
    x = 93,502,601,090.93/346,459
  6. Step 6: Final answer
    x = 269,880.71

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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.