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Finding the Fourth Proportional to 272,503.50, 376,054.86 and 153,271.50

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Solution

The fourth proportional to 272,503.50, 376,054.86 and 153,271.50 is: 211,514.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,503.50 : 376,054.86 = 153,271.50 : x
  2. Step 2: Convert to fraction form
    272,503.50/376,054.86 = 153,271.50/x
  3. Step 3: Cross multiply
    272,503.50x = 376,054.86 × 153,271.50
  4. Step 4: Simplify right side
    272,503.50x = 57,638,492,474.49
  5. Step 5: Solve for x
    x = 57,638,492,474.49/272,503.50
  6. Step 6: Final answer
    x = 211,514.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.