Home / 390,889,158.23-586,333,242.20-99,756,287.53

Finding the Fourth Proportional to 390,889,158.23, 586,333,242.20 and 99,756,287.53

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Solution

The fourth proportional to 390,889,158.23, 586,333,242.20 and 99,756,287.53 is: 149,634,304.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,889,158.23 : 586,333,242.20 = 99,756,287.53 : x
  2. Step 2: Convert to fraction form
    390,889,158.23/586,333,242.20 = 99,756,287.53/x
  3. Step 3: Cross multiply
    390,889,158.23x = 586,333,242.20 × 99,756,287.53
  4. Step 4: Simplify right side
    390,889,158.23x = 58,490,427,496,083,888
  5. Step 5: Solve for x
    x = 58,490,427,496,083,888/390,889,158.23
  6. Step 6: Final answer
    x = 149,634,304.93

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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.