Home / 304,639,113.61-420,390,190.60-165,406,689.19

Finding the Fourth Proportional to 304,639,113.61, 420,390,190.60 and 165,406,689.19

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Solution

The fourth proportional to 304,639,113.61, 420,390,190.60 and 165,406,689.19 is: 228,254,831.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,639,113.61 : 420,390,190.60 = 165,406,689.19 : x
  2. Step 2: Convert to fraction form
    304,639,113.61/420,390,190.60 = 165,406,689.19/x
  3. Step 3: Cross multiply
    304,639,113.61x = 420,390,190.60 × 165,406,689.19
  4. Step 4: Simplify right side
    304,639,113.61x = 69,535,349,596,143,920
  5. Step 5: Solve for x
    x = 69,535,349,596,143,920/304,639,113.61
  6. Step 6: Final answer
    x = 228,254,831.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.