Home / 390,012,077.80-585,018,116.70-160,146,130.60

Finding the Fourth Proportional to 390,012,077.80, 585,018,116.70 and 160,146,130.60

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Solution

The fourth proportional to 390,012,077.80, 585,018,116.70 and 160,146,130.60 is: 240,219,195.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,012,077.80 : 585,018,116.70 = 160,146,130.60 : x
  2. Step 2: Convert to fraction form
    390,012,077.80/585,018,116.70 = 160,146,130.60/x
  3. Step 3: Cross multiply
    390,012,077.80x = 585,018,116.70 × 160,146,130.60
  4. Step 4: Simplify right side
    390,012,077.80x = 93,688,387,720,404,240
  5. Step 5: Solve for x
    x = 93,688,387,720,404,240/390,012,077.80
  6. Step 6: Final answer
    x = 240,219,195.90

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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.