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Finding the Fourth Proportional to 371,607.40, 557,411.10 and 313,870.60

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Solution

The fourth proportional to 371,607.40, 557,411.10 and 313,870.60 is: 470,805.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,607.40 : 557,411.10 = 313,870.60 : x
  2. Step 2: Convert to fraction form
    371,607.40/557,411.10 = 313,870.60/x
  3. Step 3: Cross multiply
    371,607.40x = 557,411.10 × 313,870.60
  4. Step 4: Simplify right side
    371,607.40x = 174,954,956,403.66
  5. Step 5: Solve for x
    x = 174,954,956,403.66/371,607.40
  6. Step 6: Final answer
    x = 470,805.90

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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.