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Finding the Fourth Proportional to 369,702.72, 554,554.32 and 89,220

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Solution

The fourth proportional to 369,702.72, 554,554.32 and 89,220 is: 133,830.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,702.72 : 554,554.32 = 89,220 : x
  2. Step 2: Convert to fraction form
    369,702.72/554,554.32 = 89,220/x
  3. Step 3: Cross multiply
    369,702.72x = 554,554.32 × 89,220
  4. Step 4: Simplify right side
    369,702.72x = 49,477,336,430.40
  5. Step 5: Solve for x
    x = 49,477,336,430.40/369,702.72
  6. Step 6: Final answer
    x = 133,830.06

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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.