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Finding the Fourth Proportional to 371,155.76, 556,461 and 118,290.74

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Solution

The fourth proportional to 371,155.76, 556,461 and 118,290.74 is: 177,349.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,155.76 : 556,461 = 118,290.74 : x
  2. Step 2: Convert to fraction form
    371,155.76/556,461 = 118,290.74/x
  3. Step 3: Cross multiply
    371,155.76x = 556,461 × 118,290.74
  4. Step 4: Simplify right side
    371,155.76x = 65,824,183,471.14
  5. Step 5: Solve for x
    x = 65,824,183,471.14/371,155.76
  6. Step 6: Final answer
    x = 177,349.22

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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.