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Finding the Fourth Proportional to 346,951, 478,792.38 and 187,975

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Solution

The fourth proportional to 346,951, 478,792.38 and 187,975 is: 259,405.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,951 : 478,792.38 = 187,975 : x
  2. Step 2: Convert to fraction form
    346,951/478,792.38 = 187,975/x
  3. Step 3: Cross multiply
    346,951x = 478,792.38 × 187,975
  4. Step 4: Simplify right side
    346,951x = 90,000,997,630.50
  5. Step 5: Solve for x
    x = 90,000,997,630.50/346,951
  6. Step 6: Final answer
    x = 259,405.50

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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.