Finding the Fourth Proportional to 390,482,841.11, 538,864,842.42 and 214,273,785.26
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Solution
The fourth proportional to 390,482,841.11, 538,864,842.42 and 214,273,785.26 is: 295,697,012.45
Step by Step Solution
- Step 1: Write the proportion equation
390,482,841.11 : 538,864,842.42 = 214,273,785.26 : x - Step 2: Convert to fraction form
390,482,841.11/538,864,842.42 = 214,273,785.26/x - Step 3: Cross multiply
390,482,841.11x = 538,864,842.42 × 214,273,785.26 - Step 4: Simplify right side
390,482,841.11x = 115,464,609,526,172,480 - Step 5: Solve for x
x = 115,464,609,526,172,480/390,482,841.11 - Step 6: Final answer
x = 295,697,012.45
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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.