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Finding the Fourth Proportional to 403,346.40, 603,707.40 and 314,116.80

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Solution

The fourth proportional to 403,346.40, 603,707.40 and 314,116.80 is: 470,153.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,346.40 : 603,707.40 = 314,116.80 : x
  2. Step 2: Convert to fraction form
    403,346.40/603,707.40 = 314,116.80/x
  3. Step 3: Cross multiply
    403,346.40x = 603,707.40 × 314,116.80
  4. Step 4: Simplify right side
    403,346.40x = 189,634,636,624.32
  5. Step 5: Solve for x
    x = 189,634,636,624.32/403,346.40
  6. Step 6: Final answer
    x = 470,153.29

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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.