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Finding the Fourth Proportional to 119,304.80, 178,946.40 and 40,421.60

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Solution

The fourth proportional to 119,304.80, 178,946.40 and 40,421.60 is: 60,628.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,304.80 : 178,946.40 = 40,421.60 : x
  2. Step 2: Convert to fraction form
    119,304.80/178,946.40 = 40,421.60/x
  3. Step 3: Cross multiply
    119,304.80x = 178,946.40 × 40,421.60
  4. Step 4: Simplify right side
    119,304.80x = 7,233,299,802.24
  5. Step 5: Solve for x
    x = 7,233,299,802.24/119,304.80
  6. Step 6: Final answer
    x = 60,628.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.