Home / 390,054,609.02-538,275,230.91-213,838,820.98

Finding the Fourth Proportional to 390,054,609.02, 538,275,230.91 and 213,838,820.98

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Solution

The fourth proportional to 390,054,609.02, 538,275,230.91 and 213,838,820.98 is: 295,097,501.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,054,609.02 : 538,275,230.91 = 213,838,820.98 : x
  2. Step 2: Convert to fraction form
    390,054,609.02/538,275,230.91 = 213,838,820.98/x
  3. Step 3: Cross multiply
    390,054,609.02x = 538,275,230.91 × 213,838,820.98
  4. Step 4: Simplify right side
    390,054,609.02x = 115,104,140,736,771,072
  5. Step 5: Solve for x
    x = 115,104,140,736,771,072/390,054,609.02
  6. Step 6: Final answer
    x = 295,097,501.93

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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.