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Finding the Fourth Proportional to 318,692.04, 478,038.10 and 105,402.70

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Solution

The fourth proportional to 318,692.04, 478,038.10 and 105,402.70 is: 158,104.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,692.04 : 478,038.10 = 105,402.70 : x
  2. Step 2: Convert to fraction form
    318,692.04/478,038.10 = 105,402.70/x
  3. Step 3: Cross multiply
    318,692.04x = 478,038.10 × 105,402.70
  4. Step 4: Simplify right side
    318,692.04x = 50,386,506,442.87
  5. Step 5: Solve for x
    x = 50,386,506,442.87/318,692.04
  6. Step 6: Final answer
    x = 158,104.06

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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.