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Finding the Fourth Proportional to 438,328.30, 657,492.45 and 189,010.30

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Solution

The fourth proportional to 438,328.30, 657,492.45 and 189,010.30 is: 283,515.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,328.30 : 657,492.45 = 189,010.30 : x
  2. Step 2: Convert to fraction form
    438,328.30/657,492.45 = 189,010.30/x
  3. Step 3: Cross multiply
    438,328.30x = 657,492.45 × 189,010.30
  4. Step 4: Simplify right side
    438,328.30x = 124,272,845,222.24
  5. Step 5: Solve for x
    x = 124,272,845,222.24/438,328.30
  6. Step 6: Final answer
    x = 283,515.45

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Similar ratio
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1.5x scale

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.