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Finding the Fourth Proportional to 245,613.40, 368,420.10 and 216,088.90

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Solution

The fourth proportional to 245,613.40, 368,420.10 and 216,088.90 is: 324,133.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,613.40 : 368,420.10 = 216,088.90 : x
  2. Step 2: Convert to fraction form
    245,613.40/368,420.10 = 216,088.90/x
  3. Step 3: Cross multiply
    245,613.40x = 368,420.10 × 216,088.90
  4. Step 4: Simplify right side
    245,613.40x = 79,611,494,146.89
  5. Step 5: Solve for x
    x = 79,611,494,146.89/245,613.40
  6. Step 6: Final answer
    x = 324,133.35

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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.