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Finding the Fourth Proportional to 346,605.80, 478,059.90 and 219,158.60

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Solution

The fourth proportional to 346,605.80, 478,059.90 and 219,158.60 is: 302,276.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,605.80 : 478,059.90 = 219,158.60 : x
  2. Step 2: Convert to fraction form
    346,605.80/478,059.90 = 219,158.60/x
  3. Step 3: Cross multiply
    346,605.80x = 478,059.90 × 219,158.60
  4. Step 4: Simplify right side
    346,605.80x = 104,770,938,400.14
  5. Step 5: Solve for x
    x = 104,770,938,400.14/346,605.80
  6. Step 6: Final answer
    x = 302,276.93

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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.