Home / 390,164,019.44-585,247,984.84-99,031,228.88

Finding the Fourth Proportional to 390,164,019.44, 585,247,984.84 and 99,031,228.88

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Solution

The fourth proportional to 390,164,019.44, 585,247,984.84 and 99,031,228.88 is: 148,547,339.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,164,019.44 : 585,247,984.84 = 99,031,228.88 : x
  2. Step 2: Convert to fraction form
    390,164,019.44/585,247,984.84 = 99,031,228.88/x
  3. Step 3: Cross multiply
    390,164,019.44x = 585,247,984.84 × 99,031,228.88
  4. Step 4: Simplify right side
    390,164,019.44x = 57,957,827,138,248,808
  5. Step 5: Solve for x
    x = 57,957,827,138,248,808/390,164,019.44
  6. Step 6: Final answer
    x = 148,547,339.71

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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.