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Finding the Fourth Proportional to 302,502.60, 417,827.70 and 221,802.30

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Solution

The fourth proportional to 302,502.60, 417,827.70 and 221,802.30 is: 306,361.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,502.60 : 417,827.70 = 221,802.30 : x
  2. Step 2: Convert to fraction form
    302,502.60/417,827.70 = 221,802.30/x
  3. Step 3: Cross multiply
    302,502.60x = 417,827.70 × 221,802.30
  4. Step 4: Simplify right side
    302,502.60x = 92,675,144,863.71
  5. Step 5: Solve for x
    x = 92,675,144,863.71/302,502.60
  6. Step 6: Final answer
    x = 306,361.48

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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.