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Finding the Fourth Proportional to 630,316.13, 945,482.40 and 209,592

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Solution

The fourth proportional to 630,316.13, 945,482.40 and 209,592 is: 314,390.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,316.13 : 945,482.40 = 209,592 : x
  2. Step 2: Convert to fraction form
    630,316.13/945,482.40 = 209,592/x
  3. Step 3: Cross multiply
    630,316.13x = 945,482.40 × 209,592
  4. Step 4: Simplify right side
    630,316.13x = 198,165,547,180.80
  5. Step 5: Solve for x
    x = 198,165,547,180.80/630,316.13
  6. Step 6: Final answer
    x = 314,390.73

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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.