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Finding the Fourth Proportional to 346,606.80, 478,061.28 and 219,159.60

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Solution

The fourth proportional to 346,606.80, 478,061.28 and 219,159.60 is: 302,278.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,606.80 : 478,061.28 = 219,159.60 : x
  2. Step 2: Convert to fraction form
    346,606.80/478,061.28 = 219,159.60/x
  3. Step 3: Cross multiply
    346,606.80x = 478,061.28 × 219,159.60
  4. Step 4: Simplify right side
    346,606.80x = 104,771,718,900.29
  5. Step 5: Solve for x
    x = 104,771,718,900.29/346,606.80
  6. Step 6: Final answer
    x = 302,278.31

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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.