Home / 390,223,769.04-538,518,688.44-214,018,779.60

Finding the Fourth Proportional to 390,223,769.04, 538,518,688.44 and 214,018,779.60

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Solution

The fourth proportional to 390,223,769.04, 538,518,688.44 and 214,018,779.60 is: 295,351,338.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,223,769.04 : 538,518,688.44 = 214,018,779.60 : x
  2. Step 2: Convert to fraction form
    390,223,769.04/538,518,688.44 = 214,018,779.60/x
  3. Step 3: Cross multiply
    390,223,769.04x = 538,518,688.44 × 214,018,779.60
  4. Step 4: Simplify right side
    390,223,769.04x = 115,253,112,491,721,440
  5. Step 5: Solve for x
    x = 115,253,112,491,721,440/390,223,769.04
  6. Step 6: Final answer
    x = 295,351,338.48

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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.