Home / 390,012,089.80-585,018,134.70-160,146,142.60

Finding the Fourth Proportional to 390,012,089.80, 585,018,134.70 and 160,146,142.60

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Solution

The fourth proportional to 390,012,089.80, 585,018,134.70 and 160,146,142.60 is: 240,219,213.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,012,089.80 : 585,018,134.70 = 160,146,142.60 : x
  2. Step 2: Convert to fraction form
    390,012,089.80/585,018,134.70 = 160,146,142.60/x
  3. Step 3: Cross multiply
    390,012,089.80x = 585,018,134.70 × 160,146,142.60
  4. Step 4: Simplify right side
    390,012,089.80x = 93,688,397,623,252,208
  5. Step 5: Solve for x
    x = 93,688,397,623,252,208/390,012,089.80
  6. Step 6: Final answer
    x = 240,219,213.90

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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.