Home / 390,223,693.29-538,518,583.67-214,018,703.85

Finding the Fourth Proportional to 390,223,693.29, 538,518,583.67 and 214,018,703.85

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Solution

The fourth proportional to 390,223,693.29, 538,518,583.67 and 214,018,703.85 is: 295,351,233.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,223,693.29 : 538,518,583.67 = 214,018,703.85 : x
  2. Step 2: Convert to fraction form
    390,223,693.29/538,518,583.67 = 214,018,703.85/x
  3. Step 3: Cross multiply
    390,223,693.29x = 538,518,583.67 × 214,018,703.85
  4. Step 4: Simplify right side
    390,223,693.29x = 115,253,049,276,191,168
  5. Step 5: Solve for x
    x = 115,253,049,276,191,168/390,223,693.29
  6. Step 6: Final answer
    x = 295,351,233.81

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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.