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Finding the Fourth Proportional to 470,020.60, 705,030.90 and 154,401.40

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Solution

The fourth proportional to 470,020.60, 705,030.90 and 154,401.40 is: 231,602.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,020.60 : 705,030.90 = 154,401.40 : x
  2. Step 2: Convert to fraction form
    470,020.60/705,030.90 = 154,401.40/x
  3. Step 3: Cross multiply
    470,020.60x = 705,030.90 × 154,401.40
  4. Step 4: Simplify right side
    470,020.60x = 108,857,758,003.26
  5. Step 5: Solve for x
    x = 108,857,758,003.26/470,020.60
  6. Step 6: Final answer
    x = 231,602.10

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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.