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Finding the Fourth Proportional to 438,547.40, 657,929.10 and 123,000.20

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Solution

The fourth proportional to 438,547.40, 657,929.10 and 123,000.20 is: 184,530.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,547.40 : 657,929.10 = 123,000.20 : x
  2. Step 2: Convert to fraction form
    438,547.40/657,929.10 = 123,000.20/x
  3. Step 3: Cross multiply
    438,547.40x = 657,929.10 × 123,000.20
  4. Step 4: Simplify right side
    438,547.40x = 80,925,410,885.82
  5. Step 5: Solve for x
    x = 80,925,410,885.82/438,547.40
  6. Step 6: Final answer
    x = 184,530.59

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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.