Home / 390,835.84-586,165.20-198,515.32

Finding the Fourth Proportional to 390,835.84, 586,165.20 and 198,515.32

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Solution

The fourth proportional to 390,835.84, 586,165.20 and 198,515.32 is: 297,728.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,835.84 : 586,165.20 = 198,515.32 : x
  2. Step 2: Convert to fraction form
    390,835.84/586,165.20 = 198,515.32/x
  3. Step 3: Cross multiply
    390,835.84x = 586,165.20 × 198,515.32
  4. Step 4: Simplify right side
    390,835.84x = 116,362,772,250.86
  5. Step 5: Solve for x
    x = 116,362,772,250.86/390,835.84
  6. Step 6: Final answer
    x = 297,728.00

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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.