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Finding the Fourth Proportional to 286,528.40, 429,792.60 and 73,295.90

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Solution

The fourth proportional to 286,528.40, 429,792.60 and 73,295.90 is: 109,943.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,528.40 : 429,792.60 = 73,295.90 : x
  2. Step 2: Convert to fraction form
    286,528.40/429,792.60 = 73,295.90/x
  3. Step 3: Cross multiply
    286,528.40x = 429,792.60 × 73,295.90
  4. Step 4: Simplify right side
    286,528.40x = 31,502,035,430.34
  5. Step 5: Solve for x
    x = 31,502,035,430.34/286,528.40
  6. Step 6: Final answer
    x = 109,943.85

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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.