Finding the Fourth Proportional to 390,497,303.94, 538,894,512.03 and 214,283,757.90
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Solution
The fourth proportional to 390,497,303.94, 538,894,512.03 and 214,283,757.90 is: 295,716,103.50
Step by Step Solution
- Step 1: Write the proportion equation
390,497,303.94 : 538,894,512.03 = 214,283,757.90 : x - Step 2: Convert to fraction form
390,497,303.94/538,894,512.03 = 214,283,757.90/x - Step 3: Cross multiply
390,497,303.94x = 538,894,512.03 × 214,283,757.90 - Step 4: Simplify right side
390,497,303.94x = 115,476,341,149,475,152 - Step 5: Solve for x
x = 115,476,341,149,475,152/390,497,303.94 - Step 6: Final answer
x = 295,716,103.50
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.