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Finding the Fourth Proportional to 478,427.40, 717,738.30 and 162,916.20

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Solution

The fourth proportional to 478,427.40, 717,738.30 and 162,916.20 is: 244,407.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,427.40 : 717,738.30 = 162,916.20 : x
  2. Step 2: Convert to fraction form
    478,427.40/717,738.30 = 162,916.20/x
  3. Step 3: Cross multiply
    478,427.40x = 717,738.30 × 162,916.20
  4. Step 4: Simplify right side
    478,427.40x = 116,931,196,430.46
  5. Step 5: Solve for x
    x = 116,931,196,430.46/478,427.40
  6. Step 6: Final answer
    x = 244,407.40

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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.